you might want to check these video out. perhaps if you send them a message they can help you out. chances are slim, but better than just waiting, no?
https://www.youtube.com/watch?v=JRjeSfiz0VM
https://www.youtube.com/watch?v=hySi9eXS0Gg

p.s : the indian guy from second video had a review site where he apparently answers questions

sorry couldn't be of much help. i myself are using l210, but haven't got any unsolved problem yet. just few minor that luckily were mentioned in those links

Havent got any issues with this particular issues for this model of printer yet( im using it because of the stock CISS)
Pretty good so far except i have to do head cleaning every week.
If i encounter this issue i will tell you

Using Windows 7 Ultimate x64 AyAy! version
Microsoft Office 2013 Professional Plus x86 AyAy! version
For double sided printing just do it manually.

how long have you been use your printer? like mine have problem to feed certain type of paper after sometimes, just feed using 80gram paper several time, it can feed normally.. but need to redo again if happen later on..

Situation:
When i print multiple pages that require one sided only... paper feed was not issue at all..
but when i wanna print 2 sided front and back of the A4... the feeding prompt  feeding error and have to press copy button to continue for every page printout. Hassle right? imagin u have 1000 pages to print...
Solution:
Set the page type to envelope. It's how I solved my duplex printing "Multi-page feed error" problem. I don't need to stand by the printer to press the copy button after each page any more. Hope this can solve your problem